diff --git a/hub_calculator_market_lib.py b/hub_calculator_market_lib.py
index d268c21..7615406 100644
--- a/hub_calculator_market_lib.py
+++ b/hub_calculator_market_lib.py
@@ -168,9 +168,9 @@ def list_calculator_exchanges() -> list[dict[str, Any]]:
 def _hub_headers() -> dict[str, str]:
     import os
 
-    token = (os.getenv("HUB_BRIDGE_TOKEN") or "").strip()
+    token = (os.getenv("HUB_BRIDGE_TOKEN") or os.getenv("CONTROL_TOKEN") or "").strip()
     if token:
-        return {"X-Hub-Bridge-Token": token}
+        return {"X-Hub-Token": token}
     return {}
 
 
diff --git a/tests/test_hub_calculator_market_lib.py b/tests/test_hub_calculator_market_lib.py
index 8d849d3..b5ca102 100644
--- a/tests/test_hub_calculator_market_lib.py
+++ b/tests/test_hub_calculator_market_lib.py
@@ -58,6 +58,12 @@ class HubCalculatorMarketLibTests(unittest.TestCase):
         self.assertEqual(fn(1.23456), 1.234)
         self.assertIsNone(fn(0.0001))
 
+    @patch.dict("os.environ", {"HUB_BRIDGE_TOKEN": "test-token"}, clear=False)
+    def test_hub_headers_use_x_hub_token(self):
+        from hub_calculator_market_lib import _hub_headers
+
+        self.assertEqual(_hub_headers(), {"X-Hub-Token": "test-token"})
+
     @patch("hub_calculator_market_lib.fetch_instance_market_sync")
     def test_get_calculator_market_from_instance(self, fetch_mock):
         fetch_mock.return_value = {